Gestational Age (Days)

Mean CRL (mm)

SD

Gestational Age (Days)

Mean CRL (mm)

SD

56

16.43

0.90

77

40.68

3.15

57

17.11

0.89

78

43.29

3.37

58

17.87

1.21

79

44.39

3.33

59

18.73

1.14

80

45.62

2.76

60

20.00

1.89

81

47.38

3.67

61

20.79

1.61

82

50.72

5.12

62

21.96

1.99

83

51.05

5.61

63

23.01

2.07

84

53.80

7.07

64

23.87

2.13

85

55.31

5.46

65

25.64

1.88

86

56.50

6.13

66

26.24

1.96

87

59.87

5.08

67

27.41

1.62

88

60.45

5.52

68

28.29

1.66

89

62.45

4.55

69

29.81

1.94

90

64.69

6.35

70

31.00

1.71

91

65.42

5.45

71

33.19

2.49

92

68.51

6.48

72

34.55

3.04

93

70.69

4.62

73

34.65

3.06

94

71.31

5.32

74

36.43

2.22

95

74.52

3.12

75

38.68

3.82

96

75.60

4.18

76

40.26

3.89

97

77.24

2.78